Invoice vs receipt: the difference

Updated August 2026 · 5 minute read

An invoice requests payment: the seller issues it before money changes hands, and it states what is owed and by when. A receipt proves payment: it is issued after the money moves, and it states what was paid, so the two documents record opposite ends of the same transaction .

What is the difference between an invoice and a receipt?

The two documents look alike on paper: a header, a list of items, a total. Every row below is a place they diverge.

Invoice vs receipt, compared point by point
Question	Invoice	Receipt
Who issues it	The seller, to request payment	The seller, to confirm payment
When it exists	Before payment, once goods or services are delivered or agreed	After payment, the moment money changes hands
What it states	What is owed: items, prices, terms, and a due date	What was paid: amount, date, and payment method
What it asks of the reader	Pay this by the due date	Nothing; it is a record, not a request
What it creates in the books	A payable for the buyer, a receivable for the seller	Evidence that closes the payable and supports the expense
What it proves in an audit	That a debt existed, and on what terms	That the debt was settled

What should each document contain?

Neither has a single mandated format, but each has a working minimum below which the document fails at its job.

On an invoice: The seller's and buyer's names, a unique invoice number, an issue date, each line with quantity and price, any tax broken out, the total owed, payment terms, and a due date. If the order came from a purchase order, the PO number belongs here too, because it is the key the buyer matches on.
On a receipt: The seller's name, the date of payment, what was bought, the amount paid, the tax included, and the payment method. A receipt for a partial payment should say what balance remains, otherwise it reads as payment in full.
On both: Enough identifying detail to tie the paper to one specific transaction. An amount with no date, or a date with no counterparty, is the kind of record that gets thrown out of an expense claim.

When is an invoice also a receipt?

At a point of sale, purchase and payment happen in the same moment, so no invoice ever exists: the receipt is the only document. That is why a shop hands you one and a contractor sends you the other.

The overlap runs the other way too. An invoice stamped paid, or reissued with a zero balance, functions as a receipt, and many small vendors close a job exactly that way instead of producing a second document. Deposits split the difference: a deposit invoice requests part of the price up front, and the receipt for it proves only that part, not the whole.

Why does the distinction matter for bookkeeping and taxes?

On accrual books the two trigger different entries. An invoice you receive creates a liability in accounts payable, dated when the expense was incurred; a receipt records the settlement of that liability, dated when the cash left. Confuse them and the timing breaks: enter a receipt as a new bill and the books show a debt that was already paid, which invites paying it twice. Enter an invoice as though it were a payment and expenses look settled while the vendor is still waiting.

Tax treatment follows the same split. A receipt substantiates a deduction, because deductions hang on money actually spent. An invoice substantiates the payable and the agreed terms, but on its own it does not show you paid. For an audit you want the pair: the invoice for what was agreed, the receipt or bank record for what was settled.

How does LedgerBox tell them apart?

LedgerBox treats invoices and receipts as separate document types with separate fields, and detects the type when a file is uploaded. An invoice comes back with its number, terms, due date, line items, and any PO reference; a receipt comes back with its date, merchant, payment method, and tax. In both cases the arithmetic is checked against the printed total, and any value the extraction is not confident in comes back flagged for review.

The distinction carries into Payables, where invoices join an approval queue beside their purchase orders and paying bank transactions, while receipts stay what they are: evidence of spending, exported as rows to CSV.

Questions people ask

Is an invoice proof of payment?

No. An invoice proves a payment was requested, and on what terms. Proof of payment is the receipt, the bank statement line, or the invoice reissued with a zero balance.

Can a receipt serve as an invoice?

Rarely. A receipt lacks payment terms and a due date because nothing is owed. When a customer needs an invoice after paying, the clean move is to issue one marked paid rather than relabel the receipt.

Do I need to keep both an invoice and a receipt for taxes?

Keep both when both exist. The invoice documents the business purpose and the terms; the receipt or bank record documents that you actually paid, which is what a deduction rests on.

What is a paid invoice called?

Often a receipted invoice, or simply a paid invoice. Once marked paid with a zero balance it does a receipt's job, and many trades use it as the only closing document.

Does receiving an invoice mean I have paid or that I owe?

It means you owe. An invoice is a request; until it is settled it sits in accounts payable, and the document that moves it out is the payment record.